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Open loop control system: the process in the system where one or several input variables affect other output variables as a result of the law affecting each other from a system. Control is characterized by an “open-loop” sequence of actions or control…
What are the different process variables? Flow. Pressure. Temperature. Level. Quality i.e. % O2, CO2, pH etc Flow, pressure, temperature is the basic three variables. Define all the process Variable and state their unit of measurement Flow: It is defined as volume per…
What is Loop checking: Loop checking is the final process before the commissioning of the processing system. Loop checking is the process that confirms the components wired correctly and also helps to ensure that the system is functioning as designed. The loop…
Current measurement is needed for devices such as the thermocouple-gauge pressure sensor and the ionization gauge that have an output in the form of a varying electrical current. Analogue meters are useful in applications where there is a need to display the…
A stepper motor is a small powered motor designed for tracking and positioning. The electromechanical actuator converts digital inputs into analog motion through the controller electronics. The normal stepper has accuracy 3-5% of step value without error accumulation. Most step motors are…
The purpose of the measurement system is to present the observer with a numerical price value that corresponds to the variable being measured. The measurement system consists of several elements or blocks. It is possible to recognize 4 types of elements, even if…
What is a Hydraulic system basically? The basic principle of a hydraulic system is derived from Pascal’s law, basically stating in a closed vessel that there are several holes in the same end so it will be emitted in all directions with…
Advantages of the Hydraulic system: When compared to the mechanical power method has a weakness in the placement of the transmission power position. It is different with hydraulic power hydraulic power lines can be placed in any place. Regardless of the…
What is DDL? DDL HART equipment description language extends mutual operation (interoperability) exceeds the Universal commands and Common Practice commands. A slave equipment manufacturer uses DDL to create one software file with all relevant equipment characteristics, so a DDL-capable host can communicate…
Optoisolators are a component that is used as a component of I / O control for equipment that operates with DC or AC voltage. An optocoupler consists of GaAs LEDs and NPN phototransistor made of silicon. In Figure a. optoisolator gets a…
